OpenGL Insights

Performance State Tracking

Aleksandar Dimitrijevi

´

c

37.1 Introduction

Reducing power consumption and dissipation is one of the predominant goals of

all modern integrated circuit designs. Besides the design-time optimizations, all

CPU/GPU vendors implement various real-time methods to reduce po wer consump-

tion while preserving acceptable performance. One of the consequences of power

management is a dynamic change in working frequencies and, hence, the overall per-

formance capabilities of the system. Modern GPU s, for both desktop and mobile

platforms, can be very a ggressive in changing working frequencies according to the

current load.

Consider a